﻿using EU.Core.AuthHelper.OverWrite;
using Microsoft.AspNetCore.Http;

namespace EU.Core.Extensions.Middlewares;

/// <summary>
/// 中间件
/// 原做为自定义授权中间件
/// 先做检查 header token的使用
/// </summary>
public class JwtTokenAuthMiddleware
{
    /// <summary>
    /// 
    /// </summary>
    private readonly RequestDelegate _next;
    /// <summary>
    /// 
    /// </summary>
    /// <param name="next"></param>
    public JwtTokenAuthMiddleware(RequestDelegate next)
    {
        _next = next;
    }


    private void PreProceed(HttpContext next)
    {
        //Console.WriteLine($"{DateTime.Now} middleware invoke preproceed");
        //...
    }
    private void PostProceed(HttpContext next)
    {
        //Console.WriteLine($"{DateTime.Now} middleware invoke postproceed");
        //....
    }

    /// <summary>
    /// 
    /// </summary>
    /// <param name="httpContext"></param>
    /// <returns></returns>
    public Task Invoke(HttpContext httpContext)
    {
        PreProceed(httpContext);


        //检测是否包含'Authorization'请求头
        if (!httpContext.Request.Headers.ContainsKey("Authorization"))
        {
            PostProceed(httpContext);

            return _next(httpContext);
        }
        //var tokenHeader = httpContext.Request.Headers["Authorization"].ToString();
        var tokenHeader = httpContext.Request.Headers["Authorization"].ToString().Replace("Bearer ", "");

        try
        {
            if (tokenHeader.Length >= 128)
            {
                //Console.WriteLine($"{DateTime.Now} token :{tokenHeader}");
                TokenModelJwt tm = JwtHelper.SerializeJwt(tokenHeader);

                //授权
                //var claimList = new List<Claim>();
                //var claim = new Claim(ClaimTypes.Role, tm.Role);
                //claimList.Add(claim);
                //var identity = new ClaimsIdentity(claimList);
                //var principal = new ClaimsPrincipal(identity);
                //httpContext.User = principal;
            }

        }
        catch (Exception e)
        {
            Console.WriteLine($"{DateTime.Now} middleware wrong:{e.Message}");
        }


        PostProceed(httpContext);


        return _next(httpContext);
    }

}

